What do the stamps inside the tush tags on beanie babies mean?

The stamps inside the tush tags of Beanie Babies indicate their generation and authenticity. Each stamp corresponds to a specific production period, helping collectors identify the age and potential value of the toy. For instance, a "Ty" stamp indicates an earlier generation, while a "Teddy" stamp may signify a later production. Collectors often refer to these stamps to determine the rarity and collectibility of the Beanie Baby.